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(No Model.)

J. B. MIGHENER & T. L. VA-RNS.

I SAW MILL DOG.

No. 289,016. Patented Nov. 2'7, 1883.

PzTe'ns. Phaob'lhograghur. Wzshirlgiml. D. C.

NITED STATES JAMES B. MIGHENER AND TOBIAS L. VARNS, OF KOKOMO, INDIANA;SAID VAR-NS ASSIGNOR TO SAID MICHENER.

SAW-MILL DOG.

SPECIFICATION forming part of Letters Patent No. 289,016, dated November27; 1883.

Application filed April 30, 1883.

f (0 whom it may concern:

Be it known that we, JAMES B. MIcHnNER and Tomas L. VaRNs, citizens ofthe United States, residing at Kolromo, in the county of Howard andState of Indiana, have invented a new and useful Improvement in Saw-MillDogs, of whichthc following is a specification.

Our invention relates to improvements in Letters Patent No. 232,924,issued to Elwood Bennett, October 5, 1880, and in similar sawmill dogs.

The object of our improvement is to provide a movable metallic bar towork between the eccentric and dog, instead of having the eccentricworking directly against the upper surface of the dog. We attain theseobjects by the mechanism illustrated by the accompanying drawings, inwhich Figure l is a perspective View of a sawmill dog containing ourimprovement; and Fig. 2 is a longitudinal section of the same.

Similarletters refer to similar parts throughout the several views.

Heretofore saw-mill dogs similar to that patented by Elwood Bennett wereso constructed that the eccentricF came in direct contact with the backor upper surface of the dog G. That method is very imperfect andobjectionable, from the fact that the eccentric soon wears off the backof the dog with which it comes in contact, so as to render itinoperative and (X0 modem useless. To avoid this wearing and the expenseof replacing the worn-out dog with a new one, we have provided ametallic bar, 5 A, having each end turned up or outward,

as shown in the drawings. The bar A is made of suitable metal, andplaced between the eccentric F and dog C, one end extending up throughthe sleeve D, as shown. The bar A 0 may be turned end for end when itbecomes worn, and when entirely worn out it can be replaced by a new oneat a nominal expense comparatively with the expense of a dog 0. \Vhenthe eccentric lever B is pressed down, the bar A also serves tostrengthen the dog 0,

as well as preventing any wearing upon it, as shown in Fig. 2.

The parts of the dog 13, O, D, E, F, and G, shown in connection with ourimprovement 0 are all common, and described in the patent to Bennett, asheretofore stated.

Having thus described our invention, we claim the following, and desireto secure the same by Letters Patent:

Ina saw-1nill dog, a movable metallic bar located between the eccentricand the back of the dog, substantially as and for the purpose set forth.

JAMES B. MIOHENEB. TOBIAS L. YARNS. Witnesses:

J. G. GERMAN, M. E. ELDER.

